No boost until 3200rpm

Technical questions and answers about the Mazda Bongo

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mikeonb4c
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Location: Living with Mango Bongo in the North West but with a tendency to roam
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Re: No boost until 3200rpm

Post by mikeonb4c » Thu Apr 29, 2010 5:28 pm

BongoMTBer wrote:Got it back and it is sorted. It was the rod in the boost compensator which acts against the cone operated by the diaphram. The rod was sticking leading to a lack of fuel when the turbo spooled up.

The compensator unit was removed from the pump, the seal replaced (which was breaking up causing the sticking) and all is good now.

Just to clarify for anyone reading.

1: The was a lack of boost, sometimes up to 3200 rpm.
2: A general lack of low down torque.
3: Syptoms went away when engine was cold.
4: No syptoms when used with a stong mix of veg oil/diesel.
5: A fairly subtle fault, that if the vehicle had it from the beginning of ownership, or if you tried veg oil and then went back to diesel, you probably wouldn't even know.

Cost me £60 + VAT to have fixed. Anyone wants to know where, then PM me.
Excellent result. Hope we have whoever did the work for you in hte recommended garages list in hte members area, along witha brief note of work they've done. 8)
BongoMTBer

Re: No boost until 3200rpm

Post by BongoMTBer » Thu Apr 29, 2010 8:11 pm

It isn't a garage Mike, they specialise in diesel pumps, alts and starters etc. Proper old-skool operating from a big shed, but know their stuff. They are not Bongo people, although he has done a cam belt on one for a friend, that is not really their type of work.

Dieselec, Ditton Priors, Shropshire.
ronhud

Re: No boost until 3200rpm

Post by ronhud » Sat May 01, 2010 8:34 am

Is the part photographable to help us check our own engines?
Ron
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